Sustainable Growth Rate Calculator
Calculate your company's maximum growth rate without external financing.
Calculation Results
Or alternatively: SGR = (Net Income – Dividends) / Net Income * (Net Income / Shareholders' Equity)
Impact of ROE on SGR
Input Variables Summary
| Variable | Meaning | Unit | Input Value |
|---|---|---|---|
| Profit Margin | Profitability per dollar of sales | % (or decimal) | — |
| Retention Ratio (b) | Portion of net income reinvested | % (or decimal) | — |
| Return on Equity (ROE) | Profitability relative to shareholder equity | % (or decimal) | — |
What is Sustainable Growth Rate (SGR)?
The Sustainable Growth Rate (SGR) is a crucial financial metric that represents the maximum rate at which a company can grow its sales and earnings without needing to seek external financing (like issuing new debt or equity). It's essentially the growth rate achievable by reinvesting the company's own earnings. Understanding SGR helps management set realistic growth targets, manage financial resources effectively, and assess the company's financial health and strategic direction.
Businesses that aim for steady, organic growth often monitor their SGR closely. It's particularly useful for established companies looking to expand without diluting ownership or taking on excessive debt. However, it's also relevant for startups to understand their funding needs if they plan to grow faster than their internal resources allow.
A common misunderstanding is confusing SGR with the company's actual growth rate. A company might be growing faster or slower than its SGR. If it's growing faster, it's likely relying on external financing, which increases financial risk. If it's growing slower, it might be underutilizing its reinvestment capacity or have internal inefficiencies.
Sustainable Growth Rate (SGR) Formula and Explanation
The most common formula for calculating the Sustainable Growth Rate is derived from the DuPont identity and assumes that the company's financial leverage and dividend payout ratio remain constant. It focuses on the internal capabilities of the firm to fund its growth.
Primary Formula:
SGR = b * ROE
Where:
- SGR = Sustainable Growth Rate
- b = Retention Ratio (also known as the plowback ratio)
- ROE = Return on Equity
The Retention Ratio (b) is the proportion of net income that is reinvested back into the business rather than paid out as dividends. It is calculated as:
b = (Net Income – Dividends) / Net Income
Alternatively, if the dividend payout ratio (DPR) is known:
b = 1 – DPR
The Return on Equity (ROE) measures how effectively a company uses the money invested by its shareholders to generate profits. It is calculated as:
ROE = Net Income / Shareholders' Equity
By combining these, the SGR formula essentially states that a company can grow at a rate equal to the percentage of its profits it reinvests (b), multiplied by how effectively it generates returns on that reinvestment (ROE).
It's important to note that the Profit Margin is implicitly included within ROE (since ROE = Net Profit Margin * Asset Turnover * Financial Leverage). While not directly in the simplified SGR formula, a higher profit margin generally leads to a higher ROE, thus contributing to a higher SGR.
Variables Table
| Variable | Meaning | Unit | Formula / Calculation |
|---|---|---|---|
| Sustainable Growth Rate (SGR) | Maximum growth rate achievable without external financing | % | b * ROE |
| Retention Ratio (b) | Proportion of net income reinvested | Decimal / % | 1 – Dividend Payout Ratio OR (Net Income – Dividends) / Net Income |
| Return on Equity (ROE) | Profitability relative to shareholders' equity | Decimal / % | Net Income / Shareholders' Equity |
| Profit Margin | Net income generated per dollar of revenue | Decimal / % | Net Income / Revenue |
| Dividend Payout Ratio (DPR) | Proportion of net income paid as dividends | Decimal / % | Dividends / Net Income |
Practical Examples
Let's illustrate with two examples:
Example 1: A Stable Tech Company
Company A is a well-established software company with consistent profitability.
- Net Profit Margin: 15% (0.15)
- Total Assets: $50,000,000
- Total Debt: $20,000,000
- Shareholders' Equity: $30,000,000
- Net Income: $3,000,000 (assuming 10% margin on $30M sales for simplicity, though margin is given directly)
- Dividends Paid: $1,200,000
Calculations:
- Retention Ratio (b): ($3,000,000 – $1,200,000) / $3,000,000 = $1,800,000 / $3,000,000 = 0.60 or 60%
- Return on Equity (ROE): $3,000,000 / $30,000,000 = 0.10 or 10%
- Sustainable Growth Rate (SGR): 0.60 * 0.10 = 0.06 or 6%
Interpretation: Company A can sustainably grow its earnings and sales by 6% per year without requiring external financing, assuming its profit margin, ROE, and dividend policy remain constant. The calculator would use Profit Margin, Retention Ratio, and ROE directly.
Example 2: A Growing Retailer
Company B is a rapidly expanding retail chain that reinvests a significant portion of its earnings.
- Net Profit Margin: 8% (0.08)
- Shareholders' Equity: $10,000,000
- Net Income: $1,500,000
- Dividends Paid: $300,000
Calculations:
- Retention Ratio (b): ($1,500,000 – $300,000) / $1,500,000 = $1,200,000 / $1,500,000 = 0.80 or 80%
- Return on Equity (ROE): $1,500,000 / $10,000,000 = 0.15 or 15%
- Sustainable Growth Rate (SGR): 0.80 * 0.15 = 0.12 or 12%
Interpretation: Company B has a higher SGR of 12%. This indicates its business model, with a decent profit margin and a high reinvestment rate relative to its equity base, allows for faster internal growth compared to Company A. The calculator would use the provided inputs directly.
How to Use This Sustainable Growth Rate Calculator
Using this calculator is straightforward and helps you quickly estimate your company's internal growth capacity.
- Input Profit Margin: Enter your company's net profit margin. This is the percentage of revenue that remains as net income. Input it as a decimal (e.g., 10% becomes 0.10).
- Input Retention Ratio (b): Enter the proportion of net income that the company reinvests back into the business. If the company pays dividends, this is 1 minus the dividend payout ratio. Input as a decimal (e.g., 60% becomes 0.60).
- Input Return on Equity (ROE): Enter your company's ROE. This reflects profitability relative to shareholder investments. Input as a decimal (e.g., 15% becomes 0.15).
- Click 'Calculate SGR': The calculator will instantly display the Sustainable Growth Rate (SGR) as a percentage.
Selecting Correct Units: For this calculator, all inputs (Profit Margin, Retention Ratio, ROE) are typically expressed as percentages or decimals. Ensure you consistently use the decimal format (e.g., 0.15 for 15%) for accurate calculations. The output SGR will also be presented as a decimal, which you can easily convert to a percentage.
Interpreting Results: The calculated SGR tells you the theoretical maximum growth rate your company can achieve using only its retained earnings. Compare this to your company's actual growth targets and past performance. If your target growth exceeds the SGR, you'll need to consider strategies like improving efficiency (boosting ROE), increasing profit margins, reducing dividend payouts (increasing b), or seeking external financing.
Key Factors That Affect Sustainable Growth Rate
Several factors influence a company's Sustainable Growth Rate. Understanding these can help businesses manage their growth trajectory:
- Profitability (Profit Margin): A higher profit margin means more net income is generated from each dollar of sales. This increases the pool of earnings available for reinvestment, thereby potentially increasing SGR if ROE is maintained.
- Efficiency of Asset Utilization (Component of ROE): How effectively a company uses its assets to generate sales impacts ROE. Higher asset turnover leads to higher ROE and thus higher SGR, assuming other factors are constant.
- Financial Leverage (Component of ROE): The amount of debt a company uses relative to equity. While higher leverage can boost ROE (and thus SGR) up to a point, it also significantly increases financial risk.
- Return on Equity (ROE): This is a direct multiplier in the SGR formula. A higher ROE, stemming from strong profitability and efficient use of equity, directly translates to a higher SGR.
- Dividend Payout Ratio / Retention Ratio (b): The more earnings a company retains and reinvests (higher 'b'), the faster it can grow internally. Companies aiming for high growth often maintain low dividend payout ratios.
- Asset Base and Capital Structure: The overall size and composition of a company's assets and its mix of debt and equity influence its capacity to generate returns and fund growth internally. Changes here directly affect ROE.
- Industry Norms: Different industries have varying typical profit margins, ROE levels, and reinvestment strategies. SGR should be viewed within the context of industry benchmarks.
- Economic Conditions: Broader economic factors can influence sales, profitability, and the availability and cost of capital, indirectly affecting the components of SGR.
Frequently Asked Questions (FAQ)
A: SGR is the *potential* growth rate a company can achieve using only retained earnings, assuming constant financial policies. The actual growth rate is the company's recorded increase in sales or earnings over a period, which may be funded internally or externally.
A: Yes, if a company has negative net income (a loss) or pays out more in dividends than its net income, its retention ratio (b) or ROE could be negative, resulting in a negative SGR. This indicates the company is shrinking internally or funding dividends through sources other than profits.
A: A high SGR suggests the company is highly profitable (high ROE) and/or reinvests a large portion of its earnings (high retention ratio). This means it has strong internal capacity for growth without needing external funds.
A: A low SGR could indicate lower profitability (low ROE), a high dividend payout ratio (low retention ratio), or both. It suggests a slower capacity for internal growth.
A: Not directly in the simplified formula. However, Profit Margin is a key component of ROE (ROE = Profit Margin * Asset Turnover * Equity Multiplier). Therefore, a higher profit margin usually contributes to a higher ROE and consequently a higher SGR.
A: The Retention Ratio (b) is simply 1 minus the Dividend Payout Ratio (DPR). For example, if DPR is 40% (0.40), then b is 1 – 0.40 = 0.60 or 60%.
A: SGR is fundamentally a limit – the maximum growth achievable internally. Companies can choose to grow slower than their SGR, but growing faster requires external financing and potentially taking on more risk.
A: The SGR model relies on assumptions of constant financial policies (leverage, dividend payout) and stable operating performance (profit margins, ROE). In reality, these factors often change, making SGR a useful estimate rather than a precise prediction.